(from Spanish bolsón, `large purse`), a semiarid, flat-floored desert valley or depression, usually centred on a playa or salt pan and entirely ... [1 related articles]
In arid regions, a basin filled with alluvium and intermittent playa lakes and having no outlet.
Is a closed desert basin with no drainage outlet, surrounded by mountains.
In arid regions, a basin filled with alluvium and intermittent playa lakes and having no outlet.
a desert valley, the level of which has been raised by aggradation, usually draining into a playa.